ME-PACR High Viscous Polyanionic Cellulose

Product Introduction:

ME-PACR filtration control additive is a high-viscosity Polyanionic Cellulose (PAC) polymer. It is used in most water-based drilling fluids, including fresh water, seawater, and brine, up to 300°F. ME-PACR can provide secondary viscosity and is effective at low concentrations. It is non-toxic and does not require a biocide. ME-PACR creates an envelope around exposed shales and cuttings to encapsulate them, reducing dispersion and improving wellbore integrity. The encapsulation protects the shale from exposure to water.

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Description

Technical Parameters

Applications/Functions

Controls filtration rates and provides supplementary viscosity
Aids in the formation of a thin, resilient, low-permeability filter cake to minimize the potential for differential sticking and the invasion of filtrate and mud solids into permeable formations

Advantages

Stable at temperatures up to 300°F
No fermenting, no biocide needed
Effective in fresh water, seawater, and brine fluids
Functions in moderate to high pH range
Encapsulates shale particles to inhibit swelling and dispersion
Environmentally compatible

Typical Properties

Appearance: White, free-flowing powder
Specific Gravity: 1.5-1.8
pH (1% aqueous solution): 8

Recommended Treatment

A typical treatment range is 0.5-2 ppb

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